Discharge-valve.



N. D. HULL.

DISCHARGE VALVE.

APPLlcATloN HLED APR. 14, 191s.

1,224,546. Patented May1,1917.

`l mammalian@ 9 UNITE@ @TAPES PATENT FFIQE.

NATHANIEL D. HULL, OF OWENSBORO, KENTUCKY, ASSIG-NOR TO THE HULL PUMP &TANK COMPANY, 0F OWENSBORO, KENTUCKY, A CORPORATION.

:DISCHARGE-VALVE.

Specification of Letters Patent.

Patented May 1, 1917.

Application led April 14, 1916. Serial No. 91,039.

To @ZZ whom t may concern.'

Be it known that I, NATHANIEL D. HULL, a citizen of the United States,residing at Owensboro, in the county of Daviess and State of Kentucky,have invented new' and useful Improvements in Discharge-Valves, of whichthe following is a speciiication.

i The invention relates to discharge valves and particularly to valvesfor use in connection with the discharge side of pumps and its object isto provide a simple and efficient valve which shall have novel means forventing it.

In the drawings Figure 1 is a vertical cross-section of the valveprovided with my invention; Fig. 2 a cross-section on the line 2 2 ofFig. 1 and Fig. 3 a bottom view of the vent plug.

Referring to the drawings the valve body 10 is in any suitable form andis provided with a partition 11 which divides it into two compartments12 and 13. Port 14 in the partition provides communication between thetwo compartments. Connection 15 in the body serves to attach or connectthe body to the discharge side of the pump and through which connectionliuid is delivered by the pump to compartment 12, from whence it passesthrough port 14 into compartment 13 and out through connection 16 inbody 10. A hose may be attached to connection 16 for convenience ofdelivery of the iiuid being pumped. Rib 17, integral with partition 11,extends across port 14 and it is apertured at 18 to receive and guidestem 19 of valve 20. Seat 21 for the valve is provided in partition 11.Stem 19 projects up through valve 20 a short distance and on itsextended end 21 is supported coiled spring 22 and a ball 23 is supportedin the upper end of the spring.

Above valve 20 the wall of the body is apertured at 24 for assemblingand access purposes. A plug 25 is in threaded engagement with the wallof aperture 24. A recess 26 of suitable depth is provided in the plug,the walls of which converge at the upper or inner end to form acone-shaped seat 27 for ball 23. The upper end of spring 22 and the ballare normally within the recess, the ball being olii' its seat 27.Aperture 28 in the plug connects the cone-shaped portion of recess 26with the exterior of the plug'. p

When fluid is being pumped into compartment 12 valve 20 is raisedthereby and body and the entrance of outside air through aperture 28 andrecess 26 is prevented. As soon as the pumping operation ceases valve 2Otakes its seat and ball 23 drops with the valve and establishescommunication between outside air and compartment 13. All luid in thatcompartment immediately drains out through connection 16, since air nowfreely enters through the apertured and recessed plug. The action of theball valve is positive for it is moved by and coincidently with thecontrolling valve 20, so that the venting of compartment 13 is alwaysassured.

What I claim is:

1. The combination of a body having inlet and outlet connections, apartition dividing the interior of the body into a plurality ofcommunicating compartments, a valve to control the said communicationand means to vent one of said compartments comprising a valveoperatively connected to the first named valve and a vent adapted to beclosed by the second valve when fluid is flowing through thecompartments.

2. In combination, a casing having inlet and discharge connections foruid, and having a plurality of communicating compartments therein, meansto control the latter communication, means to vent one of saidcompartments and means to control the vent having operative connection-to the first named controlling means.

3. In combination, a casing having fluid inlet and discharge connectionsand having a plurality of communicating compartments within it, a valveto control the latter communication, a vent connecting one of saidcompartments with outside air, a valve seat adjacent the vent and avalve flexibly connected to the first named valve and adapted to bemoved therewith t0 and 011 said seat for controlling the admission ofoutside air to said compartment.

4L. In combination, a casing having fluid inlet and dischargeconnections and having a plurality 'of communicating lcompartmentsWithin it, a valve to control the said communication, a recessed andapertured plug in the casing, a valve seatf-in- 'the' Wall of therecess, a resilient member yconnected tothe valve, a ball valve carriedby the. .resilient for "closing and opening the aperture in the plue'-In Witness whereof I herunto subscribe my name this"l 10th d ly'"OApI-il; 1916.

NATHANIEL D. HULL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington; D: U.

